Evidence map›Paper›PMID 33134107›Full record

ArticleWorld journal of orthopedics2020

Highly cross-linked versus conventional polyethylene inserts in total hip arthroplasty, a five-year Roentgen stereophotogrammetric analysis randomised controlled trial.

Justin van Loon, Daniël Hoornenborg, Inger Sierevelt, Kim Tm Opdam, Gino Mmj Kerkhoffs, Daniël Haverkamp

Open access · diamondAbstract read
In one paragraph

Article in World journal of orthopedics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 22% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Future Prospects for Clinical Applications of Nanocarbons Focusing on Carbon Nanotubes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022
    Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Justin van LoonDepartment of Orthopaedic Surgery, Xpert Orthopedie Amsterdam/Specialized Center of Orthopedic Research and Education, Amsterdam 1101EA, Netherlands.
Daniël HoornenborgDepartment of Orthopaedic Surgery, Xpert Orthopedie Amsterdam/Specialized Center of Orthopedic Research and Education, Amsterdam 1101EA, Netherlands.
Inger SiereveltDepartment of Orthopaedic Surgery, Xpert Orthopedie Amsterdam/Specialized Center of Orthopedic Research and Education, Amsterdam 1101EA, Netherlands.
Kim Tm OpdamDepartment of Orthopaedic Surgery, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam 1105AZ, Netherlands.
Gino Mmj KerkhoffsDepartment of Orthopaedic Surgery, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam 1105AZ, Netherlands.
Daniël HaverkampDepartment of Orthopaedic Surgery, Xpert Orthopedie Amsterdam/Specialized Center of Orthopedic Research and Education, Amsterdam 1101EA, Netherlands. d.haverkamp@xpertorthopedie.nl.
Children's Specialized Hospital · USAmsterdam UMC Location University of Amsterdam · NLOrthopedic One · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPolyethylene (PE) particles produced by wear of the acetabular insert are thought to cause osteolysis and thereby aseptic loosening of the implant in total hip arthroplasty (THA). As highly cross-linked polyethylene (HXLPE) is presumed to give lower wear rates,

aimTo compare the wear of REXPOL, a HXPLE, with conventional PE within the first five years after implantation using Roentgen stereophotogrammetric analysis (RSA).

methodsPatients were randomised to receive either a HXLPE (REXPOL) or a conventional PE insert during primary THA. RSA images were obtained directly postoperative and after 6 wk, 12 wk, 6 mo, 12 mo, 24 mo and five years. Functional outcomes were assessed using the Hip Injury and Osteoarthritis Outcome Score and Harris Hip Score at baseline and five years after surgery.

resultsThe HXLPE (REXPOL) showed less wear in the latero-medial direction. Significant wear rates of conventional PE were seen in the latero-medial and center-proximal direction and in volume and corrected volume, whereas the REXPOL did not show these outcomes over time. Improvement from baseline in functional outcome did not significantly differ.

conclusionTotal 3D wear is less in THAs inserted with a REXPOL inlay than a conventional PE inlay after five years. This study confirms, for the first, that the REXPOL HXLPE inlay is preferred to standard PE.

Indexed as

Highly cross-linked polyethylenePolyethylene wearPrimary total hip arthroplastyRoentgen stereophotogrammetric analysis

Identifiers

PMID33134107
PMCPMC7582113
OpenAlexW3093240633

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.